Geoengineering Won't Fix Climate Change, Researchers Say

But the interest in geoengineering continues. One good reason is that—at least as a theoretical exercise—it could help climate scientists better understand the fine detail of the workings of the planet. Major volcanic eruptions can discharge so much ash and sulphate aerosols into the upper atmosphere that they actually cool the planet for years, and a recent study has argued that the slowdown in global warming in the last decade could be a consequence of a series of relatively minor eruptions.